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Sunny_sXe [5.5K]

2 years ago

11

the Marked price of an article is 25% above its cost price when it is sold at a discount of 15% there is a gain of rupees 200 fi

nd the cost price of the article and the Marked price of the article

1 answer:

Vitek1552 [10]2 years ago

7 0

The marked price of an article is 25% above its cost price when it is sold at a discount of 15%

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Nina and Amy began arguing about who did better on their tests, but they couldn't decide who did better given that they took dif

Ilia_Sergeevich [38]

Answer:

a) $Z = 0.0085$

b) $Z = 0.0095$

c) ii. Amy

Step-by-step explanation:

Z-score:

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Question a:

Nina took a test in English and earned a 71.8. In the English class had a mean of 71.7 and a standard deviation of 11.7.

This means that $X = 71.8, \mu = 71.7, \sigma = 11.7$

So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{71.8 - 71.7}{11.7}$

$Z = 0.0085$

Question b:

Amy took a test in Social Studies and earned a 60.7. Students' test grades in Social Studies had a mean of 60.6 and a standard deviation of 10.5.

This means that $X = 60.7, \mu = 60.6, \sigma = 10.5$

So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{60.7 - 60.6}{10.5}$

$Z = 0.0095$

c) Which person did relatively better?

Amy had a higher z-score, so she did relatively better.

6 0

2 years ago

(Please help, Very desperate and I have a limited amount of time to get this done please hurry asap)

Romashka [77]

Answer:

Pic1 answers:

P(blue) = 4/26,

P(yellow or green) = 14/26

P(purple) = 0.0%

P(red or green) = 18/26

P(not pink) = 26/26

P(not blue) = 22/26

Pic2 answers:

P(u) = 1/12

P(Vowel) = 6/12

P(a,b,c,d,e) = 4/12

P(Not A) = 10/12

P(vowel or consonant) = 12/12

P(not an m,s,t) = 9/12

5 0

2 years ago

Riley has completed 6 of the 30 pages she was assigned for homework. What percentage of her homework does Riley have left to com

gtnhenbr [62]

Answer:

80 Percent

Step-by-step explanation:

Since she has done 6/30 pages, she has 24/30 more pages to complete. Convert 24/30 to a decimal by dividing 24 by 30 to get the percentage, which is 80 percent

Hopefully this helps - let me know if you have any questions!

4 0

2 years ago

For line graphs and bar graphs, the values measured by the vertical axis

mestny [16]

Answer:

Horizontal

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What is the invers function of f(x)=(n+1)^3?

zimovet [89]

Answer:

$f^{-1}(x)=\sqrt[3]{x}-1$

Step-by-step explanation:

$f(x)=(x+1)^3\\\\y=(x+1)^3\\\\x=(y+1)^3\\\\\sqrt[3]{x}=y+1\\\\y=\sqrt[3]{x}-1\\ \\f^{-1}(x)=\sqrt[3]{x}-1$

Graphing both inverses, they will be symmetrical about the line $y=x$ .

8 0

2 years ago